However, most digital systems do not provide an associative method for storage. By ignoring associative methods, we deny ourselves any attribute-based searching and we must depend on human memory to recall the position and identity of our documents.

• 关联检索是一种存储系统没有的方法，如果我们的检索系统仅以存储方法作为唯一的基础，那么我们会否认任何基于属性的检索，我们就只能依靠记忆。